Grenade-projectile.



E. GATHMANN. GRENADE PROJECTILE. APPLICATION FILED AUG-3i. I917.

Patented Apr. 29,1919.

' VENTOR.

WITNESS:

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Leo 1,925.

To all whom it may concern:

Be it known that I, EMIL GATHMANN, a citizen'of theUnited States, residing in Baltimore, State of Maryland, have invented a new and'useful Improvement in Grenaderojectiles, of which-the following is a specifi'cation.

7 This inventionrelates to an improvement in-ia construction of a grenade projectile adapted to be exploded either at a predetermined time 'duringfli-ght or upon impact ith %any resisting target. I

Intimegrenades or shrapnel projectiles of the usualtype, asmostly used heretofore, it s been'customaryjto provide a combination mieandpercussion'fuse attached one to the other; or 'built together, the fuse as a whole .bein securedto the'projectile at one end, usu'a y the "forwarde'nd. In projectiles of small caliber ordiameter it is practicallyimpossible to construct a combination time and percussion" fuse' so that the same may be attached toone another directly without unduly limiting the capacity of the projectile as aca-rrier of missiles or as a grenade. It is the primary-purpose in the construction shownm; constructsmall projectiles of a given weight, in grains, not pounds, as the projectile may be as light as one pound, itli'both atime and percussion fuse with .a.maximumchambercapacity of projectile. Asimder existing artillery conditions both types of 'fuses' are often required in the same rojectile, it is desirable to so equip thesame.

It is fistherm invention, as stated 'before, to so construct the grenade projectile that it may carry ,a maximum load of shrapnel balls or other missiles'or explosive material, and I accordingly have constructed a diaphragm or carrying plate in a novel manner, -which insures greater rigidity to the projectile case and allows the same to be fired with-high velocity, without danger of the I'ojectile distintegrating, due to shock of discharge from .With these andvother objects, not specifically mentioned,-in view, the invention consts in certain parts f'and constructions which ill be hereafter fully described, and then pee callyset forth in the claims hereunto ppended; 7

the accompanying drawings, which I inTa-part of this, specification, and in liich like characters of references indicate liesanieor like partsFigure 1 is a longidinalr cross-section of a projectile con- Specification of Letters Patent.

' the projectile.

STATES PATEN orr s.

GRENADE-PROJECTILE.

" Applicaidon filed August 31, 1917. Serial No. 189,103. i

structed in accordance with the invention, and Fig. 2 is a longitudinal plan of said projectile assembled in its cartridge case, the whole being termed inthe art fixed'am'munition. The projectilebeingl'constructed -in carries both-a time and 'e'rcussion fuse at oppositeen'ds of its longitudinal axis. In carrying the invention into effect, there is provided a. case-3 having relatively thin accordance with my; invention, preferably walls/4 atits forward portion, andheavier walls-5'at-its rear portion, "and;a collar like reduced diameter'portion fiat its rearward or base portlon, atime fusef 7jbeing seated and?v mounted by means of screw threadsbr the like on the forward relatively 'thin -portion 4* and a" percussion fuse 8' being seated and mounted by means of screw threads or the like in the reduced diameter portion 6. V The proj ectile carries a band13,:-in a'suitable band seat, of softer material 'than'th'e' walls of-the projectile 4 and 5, which band is forced into the rifling' groovesfof-the gun in theusual manner upon discharge of the proectile from the same. F The projectile, as a .who1e,ispreferably mounted in a brasscartridge-case 14 for 'carrying the propellent charge of powder, and a primer 15 is held by said case 14 in the usual manner. In the preferred constructionshown inthe accompany-ing drawing,- the time-fuse 7 i's'made of a lighter material than thepercussion fuse,

and the'bodvf of the proj ectile, suchasfor example, aluminum, I am thusableto construct a' projectile Withboth a timeand per- -"cuss io'n fuse mounted thereon, without increasing the standardized weights adoptedby the Government for various sizes of projectiles, and'still maintain a maximum carrying capacity of missiles or explosives within The missiles are shown at 12 as being practically round balls, preferably of a heavy dense material, nesting one upon the other and carried by a diaphragm 10, which diaphragm has preferably integrally connected with it a flash tube 11. It"

should be noted that the forward walls 4 of .85 ition:

lowed shoulder W onthe diaphragm is constructed to help stifien the thin portion 4 of the projectile 3'duiing-gunacceleration. 'By making the diaphragm and the flaehtube 5 integral, as shown, the constructiono'f the same is-considel ably' lightened and more spate 'and -Weight-cambe'given to the missiles balls 2 aqshown eith flrawiu c ate the explosive charge of the grenade. Dividing the itimez nd' p cussionf se an .makr ng senarat n' v the iue 32f igh er m te ial t an the een lvs ionfuse ncn ase he missil o @2 91 re l-carryingq apacity f the p oject =toja; a me a rman g mi an a ibe wh re the fli hils "@WJll-Qfilllifid g Zflin w a @m esa i y :b employed i h wnll' uo itheiproiec il s: a'gre e e is t e .l fieient %Qt11 r'-.shap s iii fil ng :li inp tien mayaobviously bet-emp oy d, both the i ap agmean g a c nt acted-send pithe mie leean 'ina h .fusei in Place-of t e r qr e nm, hhwn-{inatrhedrawing f l a 'cla medisz zg lemdeap t 'eet ie for ifled; cannon yl ndrica ea ng, hav ng a a .1 ,rtim b tn on tsiouter ty iud i ipe ipn 'a-vpqnica v ylindr a a ePQfiilQl d upo -the Qyilindl'i ahQang ca p -flaccidha d; saidacone vt ztipgut-11 )e 111gfittedwithla prinier;for iig'nition 0 hegufiaehfilz hencnnt a te Er- 11 1- it e grenadeoasingi n er g into but :nofihcmg in-le n ac rwi th @said con ai er, ia: p 1r us 1 1 51 mounted ith nd ataine i ai cqn nacte zea apo ti of h casing rm a t m iuseimQunted-Q -andreit l e :hy the t uard PQ f-t (if .9 i d 12- Ai nme leipx ie t e fe fl lifl cann n i i o gslam andlcons ng :ihie ge-r wde mntainer-lhavi g: t .fonw d congis ting of acylindrical casing, havinga contractedre arportion; abandon its outer V *cylindrical portion, aconical cylindrical gun chargeq p oyvder container having its forward ttineibiiig fitted with a primefior ignitidn V f ,h g n charge, the contracted rear portion of the grenade casing entering into but not beingin' contact with:the'saidcontainerf a percussion fu s e .mounted Within and ire-' tainedinfitid contractedqrear. portion ofthe f j m ed by the iQrWard-P iQn -.of;the s id casing--'and a time fuse mounted on and @recjasing, z ombinationwith re aining-meanefor the time fuse having less structunalaree the v retaining means of the :peroussion giu se.

..c0nSiS ing-;Qf a l ngitu in cas ngfihwi gza 'c sing;and.ae imei-f emount ii-jon nd .cas ng- I 4:. Agrelnad pr je il -for-rifle nannon eigtanceand heing;ofa.weakeramateriahthan 7 7 5. a Al'grena e pr jec l io r fie lennen al'jetained bythe forward portion of the d nylindr l p ntio i com ina ion 1 percussion fusemc n edwithin-an metainefl in :said ontrac rear roam :bi :the

ing, and a tim 'f s imoun ed yon and Initest mQny whe eof Izheve a gnj d my: if

aname tothis specifi atioxi. 

